Abstract During a regular vessel baking after a manned access a leakage of a heating/cooling pipe released about 100 l of hot water into the vacuum vessel of ASDEX Upgrade (AUG). Erosion of a ten years old Cu gasket by water during baking causes the leak. At plasma facing components the water steam forms white remnants as it reacted with the boron-hydride layers used for wall conditioning and cause locally oxidation of stainless steel. After cleaning no significant damages remained. As some remote parts of AUG are not heated water condensates at these locations and stays there for weeks. At these ports serious damages was found at certain kinds of electrical feed through and Al gaskets. Completely removal of water within 4 weeks is needed to avoid this kind of problems. To identify and fix the most dominate leak a step-by-step approach was used. After repair AUG was successful operated for 9 months till the next regular maintenance.

中文翻译：

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从托卡马克 ASDEX 升级的热水泄漏中恢复

摘要 在有人进入后的常规容器烘烤过程中，加热/冷却管道泄漏，将约 100 l 热水释放到 ASDEX Upgrade (AUG) 的真空容器中。烘烤过程中水对使用十年的铜垫圈的侵蚀会导致泄漏。在面向等离子的组件中，水蒸汽与用于壁面调节的硼氢化物层反应时会形成白色残留物，并导致不锈钢局部氧化。清洁后没有明显损坏。由于 AUG 的一些偏远地区没有加热，这些地方的冷凝水会在那里停留数周。在这些端口发现某些类型的电气馈通和铝垫圈严重损坏。为避免此类问题，需要在 4 周内完全去除水分。为了识别和修复最主要的泄漏，使用了逐步方法。